dynamic class property $$value in php

Question

How can i reference a class property knowing only a string?

class Foo {     public $bar;      public function TestFoobar()     {         $this->foobar('bar');     }      public function foobar($string)     {          echo $this->$$string; //doesn't work     } } 

what is the correct way to eval the string?

Answer 1

You only need to use one $ when referencing an object's member variable using a string variable.

echo $this->$string; 

Answer 2

If you want to use a property value for obtaining the name of a property, you need to use "{" brackets:

$this->{$this->myvar} = $value; 

Even if they're objects, they work:

$this->{$this->myobjname}->somemethod();